Which statement is true regarding California personal income tax refunds?

The statement that California excludes state income tax refunds from taxable income is accurate because, under California tax law, any state income tax refund you receive is not considered taxable income. This means that when you file your taxes, you do not have to add your California state income tax refunds to your taxable income. This exclusion is in line with the general principle that refunds for personal taxes do not count as income.

In contrast, federal tax laws have a different approach, where they can sometimes consider state tax refunds as taxable income if the taxpayer itemized deductions in the prior year. This could explain why the other options related to federal law might not be accurate in the context of California’s specific tax regulations. Hence, option C is the correct choice based on California law.